George hayes



' (No Model.)

G. HAYES. METALLIC LATHING.

No. 537,036.- PatentedApr. 9, 1895.

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. UNITED STATES PATENT OFFICE.

GEORGE HAYES, OF NEW YORK, N. Y.

I METALLIC LATHING.

SPECIFICATION forming part of Letters Patent No. 537,036, dated April 9, 1895.

Application filed April30,1894. Serial No. 509,488. (No specimens.)

To all whom it may concern.-

Be it known that I, GEORGE HAYES, a citizen of the United States, and a resident of the city, county, and State of New York, have invented a new and useful Metallic Lathing, of which the following is a specification.

My invention consists of a sheet of metal I lathing having slotted openings through the metal at intervals throughout; the field-metal .of each opening left integral with the sheet at each end of the slot, the sheet corrugated and the corrugations allowed for by a lateral expansion of the openings.

Itfurther consists of the same lathing above described except as to the field-metal of the slotted openings, which cut through transversely and turned outwardly, forward or hackwardly will serve as tongues, hooks, or barbs, the sheet corrugated and corrugations allowed for by lateral expansion of the slots, as hereinafter described, reference being had to the accompanying drawings, in which Figure 1, represents a face view of a piece of sheet-metal illustrating stages of manufacture of the sameinto lathing. The upper part of the figure represents the sheet as apertured previous to corrugating, and the lower part shows the sheet after corrugating, with expansion of apertures. Dotted lines therein show former position of the side edges of the apertures-the metal of the openings turned out of plane as tongues. Fig. 2 is a cross section on line a-b, of Fig. 1. Fig. 3 is a longitudinal section on line cd,of Fig. 1. Fig. 4 is a perspective View of lathing sheet finished corresponding to that of Fig. 1. Fig. 5 is a perspective view of a lathing sheet like Figs. 1 and 4, standing vertically with a T iron support to which the lathing is held by tongues as a clinch.

On the drawings A, indicates the sheet of metal. B, indicates apertures therein as completed before corrugating the sheet. B, indicates the same apertures-as expanded in corrugating the sheet.

The apertures in the sheet are made by punching orotherwise forcing outward to one or both sides sufficient metal from the plane of the sheet to leave a suitable sized aperture or opening, the metal so removed out of the plane of the sheet being left integral with the sheet at one or both'ends of the openin The operation may be performed by'any of the forms of punches or dies in use heretofore where found suitable, and by hand or in a machine, separatelyor in unison with the corrugating rolls.

The apertures are arranged in longitudinal lines, those of alternating lines breakingjoint, to admit of lateral expansion. As soon as the sheet has received a sufficient number of apertures, it is passed between corru gating rolls having surfaces formed as annular ridges and hollows, which compress the sheet at intervals and leave it free to move intervening such points. As the sheet metal is pressedout of plane by the corrugating rolls on the desired lines, the apertures previously formed expand laterally as shown in Fig. 1 wherein dotted lines show previous position of the edges of the apertures, and the edges assume a curved form more conducive to the reception of plaster than straight edges would be,

and the sum of the lateral expansion of the apertures equals the amount of surface required for the parts of the sheet out of plane so that the corrugations are fully allowed for by the lateral expansion of the apertures and I therefore the sheet when finished will remain of the same area as that of the original fiat sheet, or blank from which it was made, so that a saving of cost for covering a given surface, or to furnish a given surface of wall is secured, as there is no loss by contraction, a result always consequent upon corrugating in the old way.

Figs. 1, 3, 1, and 5, show tongues of metal forced out of the apertures le'ft integral with the sheet at each end of the openings. The tongues are made by cutting transversely midway the length. Such tongues may be turned to one end of each opening only if desired, and to either side or face of the sheet, or to both faces, as in Figs. 1 and 4.. The tongues are indicated at O.

The lathing herein described has the peculiar advantage of permitting a free passage of the plaster through the apertures, thus effecting a more substantial union of plaster when applied to both faces and used as a partition; and the form made with tongues is es pecially desirable for this purpose wherever supports are necessary for added strength, as the tongues may be used to entwine or grip a ICO bar of iron, T bar, angle iron, tube or pipe, or other rod, wire, 650., used as a support or reinforcement, after the manner shown in Fig. 5, where D, indicates such support grasped by the tongues of the lathing.

The tongues may be readily formed to stand bending forward or backward, and are also easily bent by hand in aflixing the lathing to the supports.

What I claim as new, and desire to secure by Letters Patent, is-

1. A sheet of metal lathing having at intervals throughout, slotted openings through the metal, the field-metal of each opening leftintegral with the sheet at each end of the slot,

the sheet corrugated and the corrugations allowed for by a lateralexpansion of the openin s.

2 A sheet of metal lathing having at intervals throughout, slotted openings through the metal, the field-metal of each opening left integral with the sheet at each end of the slot,

cut through transversely and left as tongues, hooks or barbs-the sheet corrugatated and the corrugations allowed for by lateral expan- 2 5 

